burton



( No Model.) 3 Sheets-Sheet 1.

A. G. BURTON. BURGLAR PROOF SAFE.

No. 425,403. Patented Apr 15 1890.

'Hlum lls is Pawns cu, mom-Lmm, wasumcrrun, o. c.

(No Model.) 3 Sheets-Sheet 2.

A. e. BURTON. BURGLAR PROUF SAFE.

N0. 425,403. Patented Apr. 15, 1890.

.Ll-HLLLL fi a 8 lmn mum mummy no'ueases (No Model.) 3 eeeee s-' eeeee 3.

A. G. B TON.

BURGLAR R 0}? SAFE.

WM IIIHHIIWIWH YI; I lll lll IH HIM'HH 11E H: n

UNITED STATES PATENT OFFICE.

AUGUSTUS G; BURTON, OF CHICAGO, ILLINOIS, ASSIGNOR. OF ONE-HALF TO DESTAING S. COVERT, OF SAME PLACE.

BURGLAR-PROOF SAFE.

SPECIFICATION forming part of Letters Patent No. 425,403, dated. April 15, 1890.

Application filed December 6, 1889. Serial No. 332,782. (No model.)

To all whom it may concern.-

Be it known that I, AUGUSTUS G. BURTON, a

pertains to make and use the same, reference.

being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

My invention relates to burglar-proof safes, and its purposes are to provide for the easy adjustment of a close-fitting door, to secure an independent hinge-support, and to reduce the friction of the hinges.

It has become necessary that safe-doors should fit very nicely, so as to afford no openings for the introduction of powerful explosives. The slightest sagging of such a door of great weight renders its closing difficult and it very soon becomes inoperative. Great difficulty has been found and expense involved in readjusting such a door. These diihcnlties are readily overcome by my invention. V

In the accompanying drawings, Figure 1 shows 'a front elevation of 'an ordinary safe with my improved adjusting-frame attached thereto, portions of the frame being broken away to show the frame to be independent of the safe. Fig. 2 shows atop view of the safe, fragments of the frame being broken away as in Fig. 1. Fig. 3 shows a side elevation of the safe. Fig. 4 shows a vertical section through the line 1 1, Fig. 2, the body of the safe being indicated by the dotted lines. 7 Fig. 5 represents a vertical section of the hinge through the line 2 2, Fig. 2, showing the antifriction bearings. Fig. 6 shows a transverse section through the line 3 3, Fig. 5; and Fig. 7 represents a similar view through the line 44., Fig. 5. Fig. 8 shows a detail of the bearing.

The principal feature of my invention consists in the frame A, incasing the safe 13, which is of the usual form and secured thereto by the set-screws a, of which there are three at each of the upper corners of the safe, one

screw bearing upon each face thereof and two at each of the lower corners, one screw bearing against each of the vertical faces of the safe. This frame is made of angle-iron 55 or other suitable metal of the same form, so as to enfold each of the vertical angles of the safe and the front and side angles at the top of the safe, and a flat strip a extending across the front of the safe, at the bottom thereof, uniting the front verticals of the frame, and suitable cross-stays at the back of the safe, as a (L The inside measurements of the frame A are somewhat greater than the outside measurements of the safe 13, so that the frame nowhere comes in contact with the safe. The set-screws a hold the frame securely upon the safe and afford means for its adjustment relatively thereto in all directions.

The door I) is carried by the frame A by means of the crane-hinges C O, of ordinary form, except that the bearings at the fixed ends of the hinges present the following-described features, which I believe to be novel in safe-building: The upper or movable portion 0 of the hinge is provided with the circular chamber 0, having a fiat bottom. Through the center of this chamber passes the hingepin D, which is surrounded by the anti-friction rollers cl. Between the movable leaf 0 and the fixed portion 0 of the hinge is provided another circular chamber E, whose greatest depth is at its periphery, its top and bottom approaching each other toward the center. This chamber may be formed in either portion of the hinge, or partly in both thereof. W'ithin said chamber E are adjusted the anti-friction cones e, which sustain the vertical pressure at the hinges. 90.

The door I), being carried entirely by the frame A, is readily adjusted to its place by means of the set-screws, and should it at any time sag by reason of the wearing of the hinges or from other cause it may be at once readjusted by the same means.

The use of the anti-friction hearing such as is described is of special advantage in the case of large safes, in which the weight of the doors sometimes amounts to several tons.

I claim 1. In combination with a burglar-proof safe,

bearings 0 between the swinging and fixed leaves of the hinge.

4. In combination with aburglar-proof safe, the anti-friction hinge, substantially as described, having the rollers d surrounding the hinge-pin, and the conical bearings a between the swinging and fixed leaves of thehinge.

In testimony whereof I aflix my signature in presence of two Witnesses. I

AUGUSTUS G. BURTON.

WVitnesses:

FRANK G. WARD, JOHN C. WEBER. 

